University of Tennessee Athletics
2025-26 Women's Swimming & Diving Roster
Roster
Hirai, Mizuki

Mizuki Hirai
- Class:
- Freshman
- Hometown:
- Kariya City, Japan
Bio
Prior to Tennessee
- Top Times prior to Tennessee (Converted from LCM & SCM): 100 fly (49.48), 100 back (51.61), 100 free (48.64), 50 free (22.29).
- 2024 Paris Olympian for Japan at 17 years old, finishing seventh overall in the 100 fly with a time of 57.19.
- World junior record holder in 100 fly (56.33).
- Checked in at No. 52 on SwimSwam's Top 100 World Rankings for 2025.
- Her top time in the event converted to short course yards is 49.48, which would rank second in program history and would've been good for fourth at the 2025 NCAA Championships.
- Her converted time in the 100 back (51.61) would rank sixth in program history.
- Placed fifth in the 100 fly at the 2024 Short Course World Championships.
- Will be the first Japanese swimmer to compete at Tennessee and is the second student-athlete of any sport after Shunsuke Mitsui played for men's tennis.
Everything Orange S2 | McKenzie Siroky (Women's Swim & Dive)
Thursday, February 20
Alex Cleveland Peace Corps Feature
Thursday, July 12
Senior Feature
Sunday, January 28